In reply to MM1BJP:
Please find VIA EMAIL complete with attached WORD doc, the hardware-mod info you require for the FT817ND.
I did this mod myself after info gathering exercise from Mods.dk, M0JDK (John, who also did his own) and a Yaesu UK workshop technician. It is no big deal if you’re careful. The photos on page 2 were taken by me, pre-mod & post-mod. The notes in blue show how my rig (a 1 year old ND) differs from the Mods.dk website dismantling instructions (probably based on an earlier rig which is not an ND). The later ND’s are easier because you don’t need to tough the BNC nut.
I did my own IC706 Mk2G too but broke and had to repair a very tiny PCB track, so be careful. The 817 is not as hard to do as the 706 though.
Hope it’s a success. I assume you have the licence NOV. For operating protocols on 5 MHz, you could do worse that to consult John GW4BVE. It’s a case of keeping the SOTA good name but you probably know all that already!
Hope it mods OK,
73, John G4YSS.